Code Coverage for /Users/twarren/code/php-kilo/src/Event.php

1	<?php declare(strict_types=1);
2
3	namespace Aviat\Kilo;
4
5	class Event {
6	use Traits\ConstList;
7
8	// ------------------------------------------------------------------------
9	// Valid Events
10	// ------------------------------------------------------------------------
11	public const INPUT_KEY = 'INPUT_KEY';
12	public const PAGE_CHANGE = 'PAGE_CHANGE';
13	public const MOVE_CURSOR = 'MOVE_CURSOR';
14	public const QUIT_ATTEMPT = 'QUIT_ATTEMPT';
15
16	// Mapping of events to handlers
17	private static $subscribeMap = [];
18
19	public static function fire(string $eventName, $value): void
20	{
21	static::validateEvent($eventName);
22
23	if (array_key_exists($eventName, static::$subscribeMap))
24	{
25	foreach (static::$subscribeMap[$eventName] as $fn)
26	{
27	$fn($value);
28	}
29	}
30	}
31
32	public static function on(string $eventName, callable $fn): void
33	{
34	static::validateEvent($eventName);
35
36	if ( ! array_key_exists($eventName, static::$subscribeMap))
37	{
38	static::$subscribeMap[$eventName] = [];
39	}
40
41	if ( ! in_array($fn, static::$subscribeMap[$eventName], TRUE))
42	{
43	static::$subscribeMap[$eventName][] = $fn;
44	}
45	}
46
47	private static function validateEvent(string $eventName): void
48	{
49	$validEvents = self::getConstList();
50
51	if ( ! array_key_exists($eventName, $validEvents))
52	{
53	throw new \InvalidArgumentException("Invalid event '{$eventName}'. Event const must exist in Aviat\\Kilo\\Event.");
54	}
55	}
56	}